Currently i am working on bundle project, which has a mix of objective c and swift code in a bundle project. Here is my sample code goes, where I have written a function in Objective C which internally calls swift code for a specific operation. I am successfully able to write and execute a unit test for a objective C functions which contains objective C code only, but, if the same objective C function contains swift code like creating instance for a swift class) where my unit test project fails to compile.Error:Undefined symbol: _OBJC_CLASS_$__TtC12SampleBundle11SwiftClassExample:SwiftClass.swift------------------@objc public class SwiftClass: NSObject { @objc func doSomething() { print(" I am in swift ") }ObjcClass.m---------------@implementation ObjcClass- (void)doBSomethingobjc { printf("\n ---------I am in objc--------- \n"); SwiftClass *obj = [SwiftClass alloc]; // Without this unit test runs. //With this i am seeing compilation error, undefined symbol [obj doSomething];}@endAppreciate your valuable inputs.